Heavy, yes, the medic follows you because once he fills his ability meter up and activates it, you and him become almost unstoppable. At which point you can litterally walk down hallways in a hail of gunfire and just demolish all.
It's fun, plus I like to spin up my barrels to mess with people, get them to walk around a corner thinking I'm alone, and then the pyro they never knew was there lights their ass up.
Then I light their ass up

It's fun, plus I like to spin up my barrels to mess with people, get them to walk around a corner thinking I'm alone, and then the pyro they never knew was there lights their ass up.
Then I light their ass up